47100172 has 36 divisors (see below), whose sum is σ = 97531560. Its totient is φ = 19838784.

The previous prime is 47100169. The next prime is 47100181. The reversal of 47100172 is 27100174.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9528 + ... + 13600.

It is an arithmetic number, because the mean of its divisors is an integer number (2709210).

Almost surely, 2^47100172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47100172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48765780).

47100172 is an abundant number, since it is smaller than the sum of its proper divisors (50431388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47100172 is a wasteful number, since it uses less digits than its factorization.

47100172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150 (or 4141 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 47100172 is about 6862.9565057634. The cubic root of 47100172 is about 361.1388114206.

The spelling of 47100172 in words is "forty-seven million, one hundred thousand, one hundred seventy-two".